Development of photo-magnetic drug delivery system by facile-designed dual stimuli-responsive modified biopolymeric chitosan capped nano-vesicle to improve efficiency in the anesthetic effect and its biological investigations

Author(s):  
Hongwei Liu ◽  
Junfeng Liu ◽  
Xianfeng Xie ◽  
Xuebin Li
2018 ◽  
Vol 33 (2) ◽  
pp. 170-181 ◽  
Author(s):  
Hongying Su ◽  
Wen Zhang ◽  
Yayun Wu ◽  
Xiaodong Han ◽  
Gang Liu ◽  
...  

Stimuli-responsive hydrogels have been widely researched as carrier systems, due to their excellent biocompatibility and responsiveness to external physiologic environment factors. In this study, dextran-based nanogel with covalently conjugated doxorubicin (DOX) was developed via Schiff base formation using the inverse microemulsion technique. Since the Schiff base linkages are acid-sensitive, drug release profile of the DOX-loaded nanogel would be pH-dependent. In vitro drug release studies confirmed that DOX was released much faster under acidic condition (pH 2.0, 5.0) than that at pH 7.4. Approximately 66, 28, and 9% of drug was released in 72 h at pH 2.0, 5.0, and 7.4, respectively. Cell uptake by the human breast cancer cell (MCF-7) demonstrated that the DOX-loaded dextran nanogel could be internalized through endocytosis and distributed in endocytic compartments inside tumor cells. These results indicated that the Schiff base-containing nanogel can serve as a pH-sensitive drug delivery system. And the presence of multiple aldehyde groups on the nanogel are available for further conjugations of targeting ligands or imaging probes.


2015 ◽  
Vol 117 (17) ◽  
pp. 17D135
Author(s):  
Yoshihiro Oaku ◽  
Junya Tamada ◽  
Fumihito Mishima ◽  
Yoko Akiyama ◽  
Mariana Kiomy Osako ◽  
...  

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 82334-82341 ◽  
Author(s):  
Xuelian Zhi ◽  
Yanfang Wang ◽  
Pengfei Li ◽  
Jiang Yuan ◽  
Jian Shen

Nanoscale polyion complex formation via the electrostatic complexation of a polyelectrolyte and a charged drug is the most convenient method for building a drug delivery system that simultaneously realizes the carrier preparation and drug embedding.


2016 ◽  
Vol 43 (3) ◽  
pp. 409-420 ◽  
Author(s):  
Muhammad Tahir Haseeb ◽  
Muhammad Ajaz Hussain ◽  
Sajid Bashir ◽  
Muhammad Umer Ashraf ◽  
Naveed Ahmad

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